consulate in benghazi, libya. an independent panel has concluded security at the consulate was grossly inadequate because of systematic failures and mismanagement at the state department. >>> a stunning sight here in new york. work is progressing quickly, at one world trade center, the freedom tower. george, of course, you got to spend some time atop that earlier this year. these photos taken from the 101st floor. this is a crane lifting an escalator to the top of that building, where crews are eagerly waiting to install it. and night-by-night, seeing that climb in the night sky is a remarkable sight to see in manhattan. >>> here's diane sawyer with a preview of "world news." diane? >> josh, it's great to talk to you this morning. tonight on "world news," we want everyone to watch as we put a clock on the most popular assault rifle. and we'll show you in detail how much difference a few seconds make in taking and saving a life. we'll have that tonight. >> we'll be watching, diane. >>> finally, do you ever get home